A concept for skateboard wheels to be combined with the bearings that normally go inside of them to make a combination wheel and bearing.
***Please note: It has yet to be tested, as the person who I originally printed them out for hasn't gotten back to me on whether or not they work, and what needs to be changed***
**You will need:** - 3 or 6 M2.5x20 screws
*(In theory, can be any length from 10mm to 20mm long, as it's just used to hold the top of the cage to the bottom section. Though, I imagine that the longer screw would help give the print more reinforcement...)*
Supports are needed for the inner section, outer section, and the bottoms of the rollers. The top and bottom cage pieces can be printed without.
There is also likely a lot of play in the bearing when you print it, as the tolerances are designed for my printer, so you may need to print the rollers a little bit bigger or smaller, depending on your printers configuration. Keep in mind only to increase the X & Y axis dimensions and not the Z (height) as this will make the rollers not fit correctly.
**To assemble:** 1) Remove the support material (obviously) 2) Place the inner and outer race pieces, and the bottom cage piece down 3) Carefully spin the bottom cage around until you find an empty slot (that coincides with the cutout on the outer race) 4) Put a roller into the empty slot (caution: this may require a bit of force, depending on the size of the rollers and their fitment) 5) Repeat steps 3 & 4 until all 6 slots are filled 6) Place and screw in the top cage piece to the bottom cage (you may have to leave a small gap to avoid any friction from the screw making contact with the outer race)